The videos show what have become now familiar scenes in Syria of choking victims being treated in medical centers, but one video stood out from the rest.

It appears in this video yellowish-green chlorine gas may be visible, the first time footage has been shot on the ground showing the gas shortly after impact.

To me, it's difficult not to see three chemical attacks on the same day an attempt to refer the Syria to the ICC is vetoed as the Syrian government thumbing its nose at the international communities' attempts to hold it to account. Given the flaccid reaction to chemical barrel bomb attacks it seems future attacks of this type are more than likely.

This smoke really looks like the one used by Fire Departement officers or independent certifying bodies technicians to verify smoke exhaust systems . Looks like a M-18 smoke that was generated in a remote chamber so it is less dense .